博根通信MIC LINE输入模块说明书

LMM 1S
Mic/Line Input Module
Features
•Line mode for high impedance input •MIC Mode for low impedance input •Electronically balanced input
•Gain/T rim control with Gain range switch •Bass and treble •24V Phantom power •Audio Gating
•Gating with threshold and duration adjustments •Fade back from mute • 4 levels of available priority
•Can be muted from higher priority modules •Can mute lower priority modules •
Removeable screw terminal input
© 2007 Bogen Communications, Inc.54-2156-01A 0706
Specifications subject to change without notice.
5. Gain
Provides control over the level of input signal that can be applied to the internal signal buses of the main unit. Balances the input levels of various devices so that the main unit controls can be set to relatively uniform or optimum levels. 18-60 dB Gain range in MIC position, -2 to 40dB in Line position.
6. MIC/Line In
MIC/Line level input on removeable screw terminal strip. Electronically balanced input.
4. Bass
The Bass control provides +/- 10 dB at 100 Hz. Clockwise rotation provides boost; counter-clockwise rotation provides cut. Center position provides no effect.WARNING:
Turn off power to unit and make all jumper
selections before installing module in unit.
Module Installation
1.
T urn off all power to the unit.2.Make all necessary jumper selections.
3.Position module in front of any desired module bay opening, making sure that the module is right-side up.
4.Slide module onto card guide rails. Make sure that both the top and bottom guides are engaged.
5.Push the module in to the bay until the faceplate contacts the unit’s chassis.
6.
Use the two screws included to secure the module to the unit.
Gating
Gating (turning off) of the module’s output when insufficient audio is present at the input can be disabled. Detection of audio for the purpose of muting lower priority modules is always active regardless of this jumper setting.
Phantom Power
24V Phantom power can be supplied to condensor microphones when jumper is set to ON position.Leave OFF for dynamic mics.
Bus Assignment
This module can be set to operate so that the mono signal can be sent to the main unit’s A bus, B bus, or both buses.
MIC/LINE Switch
Sets input gain range for the intended input device. MIC gain range 18 – 60 dB, LINE gain range -2 – 40 dB.
Jumper Selections
Priority Level *
This module can respond to 4different levels of priority.Priority 1is the highest priority.It mutes modules with lower pri-orities and is never muted.Priority 2 can be muted by Priority 1modules and can mute modules set for Priority Level 3or 4. Priority 3 can be muted by either Priority 1or 2 modules and can mute Priority 4 mod-ules. Priority 4 modules are muted by all higher priority modules. Remove all jumpers for “no mute” setting.
*The number of priority levels avail-able is determined by the equip-ment the modules are used in.
50 Spring Street, Ramsey, NJ 07446, U.S.A.
201-934-8500; Fax: 201-934-9832
Block Diagram。